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Jackson-SC-22816

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Term
Definition
innate behavior   an inherited behavior that does not depend on the environment or experience  
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learned behavior   a behavior that has been learned from experience  
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invertebrates   an animal that does not have a backbone  
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ganglion   a mass of nerve cells  
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coelom   a body cavity that contains the internal organs  
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open circulatory system   a circulatory system in which the circulatory fluid is not contained entirely within vessels; a heart pumps fluid through vessels that empty into spaces called sinuses  
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closed circulatory system   a circulatory system in which the heart circulates blood through a network of vessels that form a closed loop; the blood does not leave the blood vessels, and materials diffuse across the walls of the vessels  
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segment   any part of a larger structure, such as the body of an organism, that is set off by natural or arbitrary boundaries  
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exoskeleton   a hard, external, supporting structure  
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compound eye   an eye composed of many light detectors  
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antenna   a feeler that is on the head of an invertebrate, such as a crustacean or an insect, and that senses touch, taste, or smell  
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metamorphosis   a phase in the life cycle of many animals during which a rapid change from the immature form of an organism to the adult form takes place  
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endoskeleton   an internal skeleton made of bone and cartilage  
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water vascular system   a system of canals filled with a watery fluid that circulates throughout the body of an echinoderm  
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gut   the digestive tract  
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Created by: tlindstrom
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